Siemens SIMATIC Operating Instructions

Diagnostics
5.2 Error Diagnostics
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
37
Note
Channel-specific diagnostics are always updated as far as the current diagnostic function in
the diagnostic frame. Subsequent, older diagnostic functions are not deleted.
Remedy: Evaluate the valid current length of the diagnostic frame in
STEP 7 using the
RET_VAL parameter of SFC 13.
Possible Fault Types of Fail-Safe Modules
The following table lists the fault types of channel-specific diagnostics. You can obtain
detailed diagnostic information via
HW Diagnostics in STEP 7 .
Table 5-1 Fault Types of Channel-Specific Diagnostics
Fault type Diagnostic function in
STEP 7
F-module Special meaning for F-modules
All Short circuit to L+ on the unconnected sensor wire
Short circuit to L+ sensor supply
Ground short circuit or defective sensor supply
Internal fault in the read circuit/test circuit
4/8 F-DI/4 F-DO P output driver defective
Short circuit of output to L+ or output driver
M output driver defective
Short circuit of output to M or output driver
00001
B
1
D
Short circuit
F-Switch Output driver overcurrent
P output driver defective
Short circuit of output to L+ or output driver
Short circuit of output to M or output driver
00100
B
4
D
Overload 4/8 F-DI/4 F-DO Output driver overcurrent
00101
B
5
D
Overtemperature All -
00110
B
6
D
Open circuit 4/8 F-DI/4 F-DO Wire break
01001
B
9
D
Fault All RAM error
EPROM error
Processor failure (expected DIP switch value/actual
DIP switch value)
Internal fault in the read circuit/test circuit
10000
B
16
D
Parameter assignment
error
All Parameter assignment error
All Module-internal supply voltage 10001
B
17
D
Sensor voltage or load
voltage is missing
4/8 F-DI/4 F-DO,
F-Switch
Load voltage is defective or not connected
10011
B
19
D
Communication error All Cyclic redundancy check (CRC) error in data
message frame
Monitoring time for data message frame exceeded
All Discrepancy error 11001
B
25
D
Safety-related shutdown
4/8 F-DI/4 F-DO,
F-Switch
Switching frequency too high

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)